<p>This is a white-skinned radish that should be harvested when it is about 3 inch (15 cm) in diameter.</p><p>Daikon Radish requires deep watering and should be fertilized once a month. Grown best in cool weather; will not tolerate extreme heat or arid conditions. Prefers full sunlight. Will grow in most types of soil; prefers pH 6.0-7.0. Prepare soil like you do for carrots.</p>